Green Tree East Elementary: english

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,644	2343.6	− 2432	−88.4	× 99 / 387	−22.6
4	68,646	2376.7	− 2473	−96.3	× 101 / 387	−25.1
5	68,648	2439.6	− 2502	−62.4	× 91 / 387	−14.7
6	68,650	2433.4	− 2531	−97.6	× 96 / 387	−24.2
Sum, rounded to a whole point						−87

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	63,591	2363.8	− 2432	−68.2	× 101 / 354	−19.5
4	63,594	2402.1	− 2473	−70.9	× 93 / 354	−18.6
5	63,595	2435.0	− 2502	−67	× 91 / 354	−17.2
6	63,597	2488.0	− 2531	−43	× 69 / 354	−8.4
Sum, rounded to a whole point						−64

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,389	2341.5	− 2432	−90.5	× 81 / 356	−20.6
4	65,391	2388.5	− 2473	−84.5	× 97 / 356	−23
5	65,394	2422.9	− 2502	−79.1	× 87 / 356	−19.3
6	65,395	2450.0	− 2531	−81	× 91 / 356	−20.7
Sum, rounded to a whole point						−84

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,473	2367.5	− 2432	−64.5	× 83 / 367	−14.6
4	65,476	2392.0	− 2473	−81	× 85 / 367	−18.8
5	65,477	2416.6	− 2502	−85.4	× 109 / 367	−25.4
6	65,480	2469.3	− 2531	−61.7	× 90 / 367	−15.1
Sum, rounded to a whole point						−74

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,858	2377.4	− 2432	−54.6	× 108 / 379	−15.6
4	65,859	2375.2	− 2473	−97.8	× 88 / 379	−22.7
5	65,860	2431.2	− 2502	−70.8	× 78 / 379	−14.6
6	65,861	2457.4	− 2531	−73.6	× 105 / 379	−20.4
Sum, rounded to a whole point						−73

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,919	2336.7	− 2432	−95.3	× 85 / 379	−21.4
4	65,920	2365.4	− 2473	−107.6	× 99 / 379	−28.1
5	65,921	2418.2	− 2502	−83.8	× 78 / 379	−17.2
6	65,922	2445.2	− 2531	−85.8	× 117 / 379	−26.5
Sum, rounded to a whole point						−93

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,926	2334.2	− 2432	−97.8	× 68 / 332	−20
4	65,927	2353.8	− 2473	−119.2	× 86 / 332	−30.9
5	65,928	2441.4	− 2502	−60.6	× 87 / 332	−15.9
6	65,929	2458.0	− 2531	−73	× 91 / 332	−20
Sum, rounded to a whole point						−87

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,894	2349.9	− 2432	−82.1	× 77 / 309	−20.5
4	65,895	2370.0	− 2473	−103	× 76 / 309	−25.3
5	65,896	2410.4	− 2502	−91.6	× 80 / 309	−23.7
6	65,897	2466.4	− 2531	−64.6	× 76 / 309	−15.9
Sum, rounded to a whole point						−85

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,654	2359.7	− 2432	−72.3	× 76 / 303	−18.1
4	65,655	2393.2	− 2473	−79.8	× 74 / 303	−19.5
5	65,656	2424.4	− 2502	−77.6	× 71 / 303	−18.2
6	65,657	2455.4	− 2531	−75.6	× 82 / 303	−20.5
Sum, rounded to a whole point						−76

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −87, −64, −84, −74, −73, −93, −87, −85, −76 → −80.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 23 · 2016→2017: 20 · 2017→2018: 10 · 2018→2019: 1 · 2019→2022: 20 · 2022→2023: 6 · 2023→2024: 2 · 2024→2025: 9 → average 11.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.4 × 2.66 = 30.3. Upper limit −50, lower limit −110.6.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.